src/src/globals.h

   1 /* $Cambridge: exim/src/src/globals.h,v 1.69 2010/06/12 15:21:26 jetmore Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /* Copyright (c) University of Cambridge 1995 - 2009 */
   8 /* See the file NOTICE for conditions of use and distribution. */
   9
  10 /* Almost all the global variables are defined together in this one header, so
  11 that they are easy to find. However, those that are visible during the
  12 compilation of the local_scan() function are defined separately in the
  13 local_scan.h header file. */
  14
  15 /* First put any specials that are required for some operating systems. */
  16
  17 #ifdef NEED_H_ERRNO
  18 extern int h_errno;
  19 #endif
  20
  21 /* Now things that are present only when configured. */
  22
  23 #ifdef EXIM_PERL
  24 extern uschar *opt_perl_startup;       /* Startup code for Perl interpreter */
  25 extern BOOL    opt_perl_at_start;      /* Start Perl interpreter at start */
  26 extern BOOL    opt_perl_started;       /* Set once interpreter started */
  27 #endif
  28
  29 #ifdef EXPAND_DLFUNC
  30 extern tree_node *dlobj_anchor;        /* Tree of dynamically-loaded objects */
  31 #endif
  32
  33 #ifdef LOOKUP_IBASE
  34 extern uschar *ibase_servers;
  35 #endif
  36
  37 #ifdef LOOKUP_LDAP
  38 extern uschar *eldap_default_servers;  /* List of default servers */
  39 extern int     eldap_version;          /* LDAP version */
  40 #endif
  41
  42 #ifdef LOOKUP_MYSQL
  43 extern uschar *mysql_servers;          /* List of servers and connect info */
  44 #endif
  45
  46 #ifdef LOOKUP_ORACLE
  47 extern uschar *oracle_servers;         /* List of servers and connect info */
  48 #endif
  49
  50 #ifdef LOOKUP_PGSQL
  51 extern uschar *pgsql_servers;          /* List of servers and connect info */
  52 #endif
  53
  54 #ifdef LOOKUP_SQLITE
  55 extern int     sqlite_lock_timeout;    /* Internal lock waiting timeout */
  56 #endif
  57
  58 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
  59 extern BOOL    move_frozen_messages;   /* Get them out of the normal directory */
  60 #endif
  61
  62 /* These variables are outside the #ifdef because it keeps the code less
  63 cluttered in several places (e.g. during logging) if we can always refer to
  64 them. Also, the tls_ variables are now always visible. */
  65
  66 extern int     tls_active;             /* fd/socket when in a TLS session */
  67 extern BOOL    tls_certificate_verified; /* Client certificate verified */
  68 extern uschar *tls_cipher;             /* Cipher used */
  69 extern BOOL    tls_on_connect;         /* For older MTAs that don't STARTTLS */
  70 extern uschar *tls_on_connect_ports;   /* Ports always tls-on-connect */
  71 extern uschar *tls_peerdn;             /* DN from peer */
  72
  73 #ifdef SUPPORT_TLS
  74 extern BOOL    gnutls_compat_mode;     /* Less security, more compatibility */
  75 extern uschar *gnutls_require_mac;     /* So some can be avoided */
  76 extern uschar *gnutls_require_kx;      /* So some can be avoided */
  77 extern uschar *gnutls_require_proto;   /* So some can be avoided */
  78 extern uschar *openssl_options;        /* OpenSSL compatibility options */
  79 extern const pcre *regex_STARTTLS;     /* For recognizing STARTTLS settings */
  80 extern uschar *tls_advertise_hosts;    /* host for which TLS is advertised */
  81 extern uschar *tls_certificate;        /* Certificate file */
  82 extern uschar *tls_crl;                /* CRL File */
  83 extern uschar *tls_dhparam;            /* DH param file */
  84 extern BOOL    tls_offered;            /* Server offered TLS */
  85 extern uschar *tls_privatekey;         /* Private key file */
  86 extern BOOL    tls_remember_esmtp;     /* For YAEB */
  87 extern uschar *tls_require_ciphers;    /* So some can be avoided */
  88 extern uschar *tls_try_verify_hosts;   /* Optional client verification */
  89 extern uschar *tls_verify_certificates;/* Path for certificates to check */
  90 extern uschar *tls_verify_hosts;       /* Mandatory client verification */
  91 #endif
  92
  93
  94 /* Input-reading functions for messages, so we can use special ones for
  95 incoming TCP/IP. */
  96
  97 extern int (*receive_getc)(void);
  98 extern int (*receive_ungetc)(int);
  99 extern int (*receive_feof)(void);
 100 extern int (*receive_ferror)(void);
 101 extern BOOL (*receive_smtp_buffered)(void);
 102
 103
 104 /* For clearing, saving, restoring address expansion variables. We have to have
 105 the size of this vector set explicitly, because it is referenced from more than
 106 one module. */
 107
 108 extern uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT];
 109
 110 /* General global variables */
 111
 112 extern BOOL    accept_8bitmime;        /* Allow *BITMIME incoming */
 113 extern header_line *acl_added_headers; /* Headers added by an ACL */
 114 extern tree_node *acl_anchor;          /* Tree of named ACLs */
 115 extern uschar *acl_not_smtp;           /* ACL run for non-SMTP messages */
 116 #ifdef WITH_CONTENT_SCAN
 117 extern uschar *acl_not_smtp_mime;      /* For MIME parts of ditto */
 118 #endif
 119 extern uschar *acl_not_smtp_start;     /* ACL run at the beginning of a non-SMTP session */
 120 extern uschar *acl_smtp_auth;          /* ACL run for AUTH */
 121 extern uschar *acl_smtp_connect;       /* ACL run on SMTP connection */
 122 extern uschar *acl_smtp_data;          /* ACL run after DATA received */
 123 #ifndef DISABLE_DKIM
 124 extern uschar *acl_smtp_dkim;          /* ACL run for DKIM signatures / domains */
 125 #endif
 126 extern uschar *acl_smtp_etrn;          /* ACL run for ETRN */
 127 extern uschar *acl_smtp_expn;          /* ACL run for EXPN */
 128 extern uschar *acl_smtp_helo;          /* ACL run for HELO/EHLO */
 129 extern uschar *acl_smtp_mail;          /* ACL run for MAIL */
 130 extern uschar *acl_smtp_mailauth;      /* ACL run for MAIL AUTH */
 131 #ifdef WITH_CONTENT_SCAN
 132 extern uschar *acl_smtp_mime;          /* ACL run after DATA, before acl_smtp_data, for each MIME part */
 133 #endif
 134 extern uschar *acl_smtp_notquit;       /* ACL run for disconnects */
 135 extern uschar *acl_smtp_predata;       /* ACL run for DATA command */
 136 extern uschar *acl_smtp_quit;          /* ACL run for QUIT */
 137 extern uschar *acl_smtp_rcpt;          /* ACL run for RCPT */
 138 extern uschar *acl_smtp_starttls;      /* ACL run for STARTTLS */
 139 extern uschar *acl_smtp_vrfy;          /* ACL run for VRFY */
 140 extern BOOL    acl_temp_details;       /* TRUE to give details for 4xx error */
 141 extern tree_node *acl_var_c;           /* ACL connection variables */
 142 extern tree_node *acl_var_m;           /* ACL messsage variables */
 143 extern uschar *acl_verify_message;     /* User message for verify failure */
 144 extern string_item *acl_warn_logged;   /* Logged lines */
 145 extern uschar *acl_wherecodes[];       /* Response codes for ACL fails */
 146 extern uschar *acl_wherenames[];       /* Names for messages */
 147 extern BOOL    active_local_from_check;/* For adding Sender: (switchable) */
 148 extern BOOL    active_local_sender_retain; /* For keeping Sender: (switchable) */
 149 extern address_item *addr_duplicate;   /* Duplicate address list */
 150 extern address_item address_defaults;  /* Default data for address item */
 151 extern uschar *address_file;           /* Name of file when delivering to one */
 152 extern uschar *address_pipe;           /* Pipe command when delivering to one */
 153 extern BOOL    address_test_mode;      /* True for -bt */
 154 extern tree_node *addresslist_anchor;  /* Tree of defined address lists */
 155 extern int     addresslist_count;      /* Number defined */
 156 extern gid_t  *admin_groups;           /* List of admin groups */
 157 extern BOOL    admin_user;             /* True if caller can do admin */
 158 extern BOOL    allow_auth_unadvertised;/* As it says */
 159 extern BOOL    allow_domain_literals;  /* As it says */
 160 extern BOOL    allow_mx_to_ip;         /* Allow MX records to -> ip address */
 161 extern BOOL    allow_unqualified_recipient; /* As it says */
 162 extern BOOL    allow_unqualified_sender; /* Ditto */
 163 extern BOOL    allow_utf8_domains;     /* For experimenting */
 164 extern uschar *authenticated_id;       /* ID that was authenticated */
 165 extern uschar *authenticated_sender;   /* From AUTH on MAIL */
 166 extern BOOL    authentication_failed;  /* TRUE if AUTH was tried and failed */
 167 extern uschar *auth_advertise_hosts;   /* Only advertise to these */
 168 extern auth_info auths_available[];    /* Vector of available auth mechanisms */
 169 extern auth_instance *auths;           /* Chain of instantiated auths */
 170 extern auth_instance auth_defaults;    /* Default values */
 171 extern uschar *auth_defer_msg;         /* Error message for log */
 172 extern uschar *auth_defer_user_msg;    /* Error message for user */
 173 extern uschar *auth_vars[];            /* $authn variables */
 174 extern int     auto_thaw;              /* Auto-thaw interval */
 175 #ifdef WITH_CONTENT_SCAN
 176 extern uschar *av_scanner;             /* AntiVirus scanner to use for the malware condition */
 177 #endif
 178
 179 extern BOOL    background_daemon;      /* Set FALSE to keep in foreground */
 180 extern uschar *base62_chars;           /* Table of base-62 characters */
 181 extern uschar *bi_command;             /* Command for -bi option */
 182 extern uschar *big_buffer;             /* Used for various temp things */
 183 extern int     big_buffer_size;        /* Current size (can expand) */
 184 #ifdef EXPERIMENTAL_BRIGHTMAIL
 185 extern uschar *bmi_alt_location;       /* expansion variable that contains the alternate location for the rcpt (available during routing) */
 186 extern uschar *bmi_base64_tracker_verdict; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
 187 extern uschar *bmi_base64_verdict;     /* expansion variable with base-64 encoded verdict string (available during routing) */
 188 extern uschar *bmi_config_file;        /* Brightmail config file */
 189 extern int     bmi_deliver;            /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
 190 extern int     bmi_run;                /* Flag that determines if message should be run through Brightmail server */
 191 extern uschar *bmi_verdicts;           /* BASE64-encoded verdicts with recipient lists */
 192 #endif
 193 extern uschar *bounce_message_file;    /* Template file */
 194 extern uschar *bounce_message_text;    /* One-liner */
 195 extern uschar *bounce_recipient;       /* When writing an errmsg */
 196 extern BOOL    bounce_return_body;     /* Include body in returned message */
 197 extern BOOL    bounce_return_message;  /* Include message in bounce */
 198 extern int     bounce_return_size_limit; /* Max amount to return */
 199 extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
 200 extern int     bsmtp_transaction_linecount; /* Start of last transaction */
 201
 202 extern int     callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
 203 extern int     callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
 204 extern int     callout_cache_positive_expire; /* Time for positive callout cache records to expire */
 205 extern int     callout_cache_negative_expire; /* Time for negative callout cache records to expire */
 206 extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
 207 extern uschar *check_dns_names_pattern;/* Regex for syntax check */
 208 extern int     check_log_inodes;       /* Minimum for message acceptance */
 209 extern int     check_log_space;        /* Minimum for message acceptance */
 210 extern BOOL    check_rfc2047_length;   /* Check RFC 2047 encoded string length */
 211 extern int     check_spool_inodes;     /* Minimum for message acceptance */
 212 extern int     check_spool_space;      /* Minimum for message acceptance */
 213 extern int     clmacro_count;          /* Number of command line macros */
 214 extern uschar *clmacros[];             /* Copy of them, for re-exec */
 215 extern int     connection_max_messages;/* Max down one SMTP connection */
 216 extern BOOL    config_changed;         /* True if -C used */
 217 extern FILE   *config_file;            /* Configuration file */
 218 extern uschar *config_filename;        /* Configuration file name */
 219 #ifdef CONFIGURE_GROUP
 220 extern gid_t   config_gid;             /* Additional group owner */
 221 #endif
 222 extern int     config_lineno;          /* Line number */
 223 extern uschar *config_main_filelist;   /* List of possible config files */
 224 extern uschar *config_main_filename;   /* File name actually used */
 225 #ifdef CONFIGURE_OWNER
 226 extern uid_t   config_uid;             /* Additional owner */
 227 #endif
 228 extern uschar *continue_hostname;      /* Host for continued delivery */
 229 extern uschar *continue_host_address;  /* IP address for ditto */
 230 extern BOOL    continue_more;          /* Flag more addresses waiting */
 231 extern int     continue_sequence;      /* Sequence num for continued delivery */
 232 extern uschar *continue_transport;     /* Transport for continued delivery */
 233
 234 extern uschar *csa_status;             /* Client SMTP Authorization result */
 235
 236 extern BOOL    daemon_listen;          /* True if listening required */
 237 extern uschar *daemon_smtp_port;       /* Can be a list of ports */
 238 extern int     daemon_startup_retries; /* Number of times to retry */
 239 extern int     daemon_startup_sleep;   /* Sleep between retries */
 240
 241 #ifdef EXPERIMENTAL_DCC
 242 extern BOOL    dcc_direct_add_header;  /* directly add header */
 243 extern uschar *dcc_header;             /* dcc header */
 244 extern uschar *dcc_result;             /* dcc result */
 245 extern uschar *dccifd_address;         /* address of the dccifd daemon */
 246 extern uschar *dccifd_options;         /* options for the dccifd daemon */
 247 #endif
 248
 249 extern BOOL    debug_daemon;           /* Debug the daemon process only */
 250 extern int     debug_fd;               /* The fd for debug_file */
 251 extern FILE   *debug_file;             /* Where to write debugging info */
 252 extern bit_table debug_options[];      /* Table of debug options */
 253 extern int     debug_options_count;    /* Size of table */
 254 extern int     delay_warning[];        /* Times between warnings */
 255 extern uschar *delay_warning_condition; /* Condition string for warnings */
 256 extern BOOL    delivery_date_remove;   /* Remove delivery-date headers */
 257
 258 extern uschar *deliver_address_data;   /* Arbitrary data for an address */
 259 extern int     deliver_datafile;       /* FD for data part of message */
 260 extern uschar *deliver_domain;         /* The local domain for delivery */
 261 extern uschar *deliver_domain_data;    /* From domain lookup */
 262 extern uschar *deliver_domain_orig;    /* The original local domain for delivery */
 263 extern uschar *deliver_domain_parent;  /* The parent domain for delivery */
 264 extern BOOL    deliver_drop_privilege; /* TRUE for unprivileged delivery */
 265 extern BOOL    deliver_firsttime;      /* True for first delivery attempt */
 266 extern BOOL    deliver_force;          /* TRUE if delivery was forced */
 267 extern BOOL    deliver_freeze;         /* TRUE if delivery is frozen */
 268 extern int     deliver_frozen_at;      /* Time of freezing */
 269 extern uschar *deliver_home;           /* Home directory for pipes */
 270 extern uschar *deliver_host;           /* (First) host for routed local deliveries */
 271                                        /* Remote host for filter */
 272 extern uschar *deliver_host_address;   /* Address for remote delivery filter */
 273 extern uschar *deliver_in_buffer;      /* Buffer for copying file */
 274 extern ino_t   deliver_inode;          /* Inode for appendfile */
 275 extern uschar *deliver_localpart;      /* The local part for delivery */
 276 extern uschar *deliver_localpart_data; /* From local part lookup */
 277 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
 278 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
 279 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
 280 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
 281 extern BOOL    deliver_force_thaw;     /* TRUE to force thaw in queue run */
 282 extern BOOL    deliver_manual_thaw;    /* TRUE if manually thawed */
 283 extern uschar *deliver_out_buffer;     /* Buffer for copying file */
 284 extern int     deliver_queue_load_max; /* Different value for queue running */
 285 extern address_item *deliver_recipients; /* Current set of addresses */
 286 extern uschar *deliver_selectstring;   /* For selecting by recipient */
 287 extern BOOL    deliver_selectstring_regex; /* String is regex */
 288 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
 289 extern BOOL    deliver_selectstring_sender_regex; /* String is regex */
 290 #ifdef WITH_OLD_DEMIME
 291 extern int     demime_errorlevel;      /* Severity of MIME error */
 292 extern int     demime_ok;              /* Nonzero if message has been demimed */
 293 extern uschar *demime_reason;          /* Reason for broken MIME container */
 294 #endif
 295 extern BOOL    disable_callout_flush;  /* Don't flush before callouts */
 296 extern BOOL    disable_delay_flush;    /* Don't flush before "delay" in ACL */
 297 #ifdef ENABLE_DISABLE_FSYNC
 298 extern BOOL    disable_fsync;          /* Not for normal use */
 299 #endif
 300 extern BOOL    disable_ipv6;           /* Don't do any IPv6 things */
 301 extern BOOL    disable_logging;        /* Disables log writing when TRUE */
 302
 303 #ifndef DISABLE_DKIM
 304 extern uschar *dkim_cur_signer;        /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
 305 extern uschar *dkim_signers;           /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
 306 extern uschar *dkim_signing_domain;    /* Expansion variable, domain used for signing a message. */
 307 extern uschar *dkim_signing_selector;  /* Expansion variable, selector used for signing a message. */
 308 extern uschar *dkim_verify_signers;    /* Colon-separated list of domains for each of which we call the DKIM ACL */
 309 extern BOOL    dkim_collect_input;     /* Runtime flag that tracks wether SMTP input is fed to DKIM validation */
 310 extern BOOL    dkim_disable_verify;    /* Set via ACL control statement. When set, DKIM verification is disabled for the current message */
 311 #endif
 312
 313 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
 314 extern int     dns_csa_search_limit;   /* How deep to search for CSA SRV records */
 315 extern BOOL    dns_csa_use_reverse;    /* Check CSA in reverse DNS? (non-standard) */
 316 extern uschar *dns_ipv4_lookup;        /* For these domains, don't look for AAAA (or A6) */
 317 extern int     dns_retrans;            /* Retransmission time setting */
 318 extern int     dns_retry;              /* Number of retries */
 319 extern uschar *dnslist_domain;         /* DNS (black) list domain */
 320 extern uschar *dnslist_matched;        /* DNS (black) list matched key */
 321 extern uschar *dnslist_text;           /* DNS (black) list text message */
 322 extern uschar *dnslist_value;          /* DNS (black) list IP address */
 323 extern tree_node *domainlist_anchor;   /* Tree of defined domain lists */
 324 extern int     domainlist_count;       /* Number defined */
 325 extern BOOL    dont_deliver;           /* TRUE for -N option */
 326 extern BOOL    dot_ends;               /* TRUE if "." ends non-SMTP input */
 327
 328 /* This option is now a no-opt, retained for compatibility */
 329 extern BOOL    drop_cr;                /* For broken local MUAs */
 330
 331 extern uschar *dsn_from;               /* From: string for DSNs */
 332
 333 extern BOOL    enable_dollar_recipients; /* Make $recipients available */
 334 extern int     envelope_to_remove;     /* Remove envelope_to_headers */
 335 extern int     errno_quota;            /* Quota errno in this OS */
 336 extern int     error_handling;         /* Error handling style */
 337 extern uschar *errors_copy;            /* For taking copies of errors */
 338 extern uschar *errors_reply_to;        /* Reply-to for error messages */
 339 extern int     errors_sender_rc;       /* Return after message to sender*/
 340 extern gid_t   exim_gid;               /* To be used with exim_uid */
 341 extern BOOL    exim_gid_set;           /* TRUE if exim_gid set */
 342 extern uschar *exim_path;              /* Path to exec exim */
 343 extern uid_t   exim_uid;               /* Non-root uid for exim */
 344 extern BOOL    exim_uid_set;           /* TRUE if exim_uid set */
 345 extern int     expand_forbid;          /* RDO flags for forbidding things */
 346 extern int     expand_nlength[];       /* Lengths of numbered strings */
 347 extern int     expand_nmax;            /* Max numerical value */
 348 extern uschar *expand_nstring[];       /* Numbered strings */
 349 extern BOOL    expand_string_forcedfail; /* TRUE if failure was "expected" */
 350 extern BOOL    extract_addresses_remove_arguments; /* Controls -t behaviour */
 351 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
 352
 353 extern int     fake_response;          /* Fake FAIL or DEFER response to data */
 354 extern uschar *fake_response_text;     /* User defined message for the above. Default is in globals.c. */
 355 extern int     filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
 356 extern BOOL    filter_running;         /* TRUE while running a filter */
 357 extern int     filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
 358 extern int     filter_test;            /* Filter test type */
 359 extern uschar *filter_test_sfile;      /* System filter test file */
 360 extern uschar *filter_test_ufile;      /* User filter test file */
 361 extern uschar *filter_thisaddress;     /* For address looping */
 362 extern int     finduser_retries;       /* Retry count for getpwnam() */
 363 extern uid_t   fixed_never_users[];    /* Can't be overridden */
 364 #ifdef WITH_OLD_DEMIME
 365 extern uschar *found_extension;        /* demime acl condition: file extension found */
 366 #endif
 367 extern uschar *freeze_tell;            /* Message on (some) freezings */
 368 extern uschar *freeze_tell_config;     /* The configured setting */
 369 extern uschar *fudged_queue_times;     /* For use in test harness */
 370
 371 extern uschar *gecos_name;             /* To be expanded when pattern matches */
 372 extern uschar *gecos_pattern;          /* Pattern to match */
 373 extern rewrite_rule *global_rewrite_rules;  /* Chain of rewriting rules */
 374
 375 extern int     header_insert_maxlen;   /* Max for inserting headers */
 376 extern int     header_maxsize;         /* Max total length for header */
 377 extern int     header_line_maxsize;    /* Max for an individual line */
 378 extern header_name header_names[];     /* Table of header names */
 379 extern int     header_names_size;      /* Number of entries */
 380 extern BOOL    header_rewritten;       /* TRUE if header changed by router */
 381 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
 382 extern uschar *helo_allow_chars;       /* Rogue chars to allow in HELO/EHLO */
 383 extern uschar *helo_lookup_domains;    /* If these given, lookup host name */
 384 extern uschar *helo_try_verify_hosts;  /* Soft check HELO argument for these */
 385 extern BOOL    helo_verified;          /* True if HELO verified */
 386 extern BOOL    helo_verify_failed;     /* True if attempt failed */
 387 extern uschar *helo_verify_hosts;      /* Hard check HELO argument for these */
 388 extern uschar *hex_digits;             /* Used in several places */
 389 extern uschar *hold_domains;           /* Hold up deliveries to these */
 390 extern BOOL    host_find_failed_syntax;/* DNS syntax check failure */
 391 extern BOOL    host_checking_callout;  /* TRUE if real callout wanted */
 392 extern uschar *host_data;              /* Obtained from lookup in ACL */
 393 extern uschar *host_lookup;            /* For which IP addresses are always looked up */
 394 extern BOOL    host_lookup_deferred;   /* TRUE if lookup deferred */
 395 extern BOOL    host_lookup_failed;     /* TRUE if lookup failed */
 396 extern uschar *host_lookup_order;      /* Order of host lookup types */
 397 extern uschar *host_lookup_msg;        /* Text for why it failed */
 398 extern int     host_number;            /* For sharing spools */
 399 extern uschar *host_number_string;     /* For expanding */
 400 extern uschar *host_reject_connection; /* Reject these hosts */
 401 extern tree_node *hostlist_anchor;     /* Tree of defined host lists */
 402 extern int     hostlist_count;         /* Number defined */
 403 extern uschar *hosts_connection_nolog; /* Limits the logging option */
 404 extern uschar *hosts_treat_as_local;   /* For routing */
 405
 406 extern int     ignore_bounce_errors_after; /* Keep them for this time. */
 407 extern BOOL    ignore_fromline_local;  /* Local SMTP ignore fromline */
 408 extern uschar *ignore_fromline_hosts;  /* Hosts permitted to send "From " */
 409 extern BOOL    is_inetd;               /* True for inetd calls */
 410 extern uschar *iterate_item;           /* Item from iterate list */
 411
 412 extern int     journal_fd;             /* Fd for journal file */
 413
 414 extern int     keep_malformed;         /* Time to keep malformed messages */
 415
 416 extern uschar *eldap_dn;               /* Where LDAP DNs are left */
 417 extern int     load_average;           /* Most recently read load average */
 418 extern BOOL    local_error_message;    /* True if handling one of these */
 419 extern BOOL    local_from_check;       /* For adding Sender: (global value) */
 420 extern uschar *local_from_prefix;      /* Permitted prefixes */
 421 extern uschar *local_from_suffix;      /* Permitted suffixes */
 422 extern uschar *local_interfaces;       /* For forcing specific interfaces */
 423 extern uschar *local_scan_data;        /* Text returned by local_scan() */
 424 extern optionlist local_scan_options[];/* Option list for local_scan() */
 425 extern int     local_scan_options_count; /* Size of the list */
 426 extern int     local_scan_timeout;     /* Timeout for local_scan() */
 427 extern BOOL    local_sender_retain;    /* Retain Sender: (with no From: check) */
 428 extern gid_t   local_user_gid;         /* As it says; may be set in routers */
 429 extern uid_t   local_user_uid;         /* As it says; may be set in routers */
 430 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
 431 extern int     localpartlist_count;    /* Number defined */
 432 extern uschar *log_buffer;             /* For constructing log entries */
 433 extern unsigned int log_extra_selector;/* Bit map of logging options other than used by log_write() */
 434 extern uschar *log_file_path;          /* If unset, use default */
 435 extern bit_table log_options[];        /* Table of options */
 436 extern int     log_options_count;      /* Size of table */
 437 extern int     log_reject_target;      /* Target log for ACL rejections */
 438 extern uschar *log_selector_string;    /* As supplied in the config */
 439 extern FILE   *log_stderr;             /* Copy of stderr for log use, or NULL */
 440 extern BOOL    log_testing_mode;       /* TRUE in various testing modes */
 441 extern BOOL    log_timezone;           /* TRUE to include the timezone in log lines */
 442 extern unsigned int log_write_selector;/* Bit map of logging options for log_write() */
 443 extern uschar *login_sender_address;   /* The actual sender address */
 444 extern lookup_info lookup_list[];      /* Vector of available lookups */
 445 extern int     lookup_list_count;      /* Number of entries in the list */
 446 extern int     lookup_open_max;        /* Max lookup files to cache */
 447 extern uschar *lookup_value;           /* Value looked up from file */
 448
 449 extern macro_item *macros;             /* Configuration macros */
 450 extern uschar *mailstore_basename;     /* For mailstore deliveries */
 451 #ifdef WITH_CONTENT_SCAN
 452 extern uschar *malware_name;           /* Name of virus or malware ("W32/Klez-H") */
 453 #endif
 454 extern int     max_received_linelength;/* What it says */
 455 extern int     max_username_length;    /* For systems with broken getpwnam() */
 456 extern int     message_age;            /* In seconds */
 457 extern uschar *message_body;           /* Start of message body for filter */
 458 extern uschar *message_body_end;       /* End of message body for filter */
 459 extern BOOL    message_body_newlines;  /* FALSE => remove newlines */
 460 extern int     message_body_size;      /* Sic */
 461 extern int     message_body_visible;   /* Amount visible in message_body */
 462 extern int     message_ended;          /* State of message reading and how ended */
 463 extern uschar *message_headers;        /* When built */
 464 extern uschar  message_id_option[];    /* -E<message-id> for use as option */
 465 extern uschar *message_id_external;    /* External form of following */
 466 extern uschar *message_id_domain;      /* Expanded to form domain-part of message_id */
 467 extern uschar *message_id_text;        /* Expanded to form message_id */
 468 extern struct timeval message_id_tv;   /* Time used to create last message_id */
 469 extern int     message_linecount;      /* As it says */
 470 extern BOOL    message_logs;           /* TRUE to write message logs */
 471 extern int     message_size;           /* Size of message */
 472 extern uschar *message_size_limit;     /* As it says */
 473 extern uschar  message_subdir[];       /* Subdirectory for messages */
 474 extern uschar *message_reference;      /* Reference for error messages */
 475
 476 /* MIME ACL expandables */
 477 #ifdef WITH_CONTENT_SCAN
 478 extern int     mime_anomaly_level;
 479 extern uschar *mime_anomaly_text;
 480 extern uschar *mime_boundary;
 481 extern uschar *mime_charset;
 482 extern uschar *mime_content_description;
 483 extern uschar *mime_content_disposition;
 484 extern uschar *mime_content_id;
 485 extern unsigned int mime_content_size;
 486 extern uschar *mime_content_transfer_encoding;
 487 extern uschar *mime_content_type;
 488 extern uschar *mime_decoded_filename;
 489 extern uschar *mime_filename;
 490 extern int     mime_is_multipart;
 491 extern int     mime_is_coverletter;
 492 extern int     mime_is_rfc822;
 493 extern int     mime_part_count;
 494 #endif
 495
 496 extern BOOL    mua_wrapper;            /* TRUE when Exim is wrapping an MUA */
 497
 498 extern uid_t  *never_users;            /* List of uids never to be used */
 499 #ifdef WITH_CONTENT_SCAN
 500 extern BOOL    no_mbox_unspool;        /* don't unlink files in /scan directory */
 501 #endif
 502 extern BOOL    no_multiline_responses; /* For broken clients */
 503
 504 extern optionlist optionlist_auths[];      /* These option lists are made */
 505 extern int     optionlist_auths_size;      /* global so that readconf can */
 506 extern optionlist optionlist_routers[];    /* see them for printing out   */
 507 extern int     optionlist_routers_size;    /* the options.                */
 508 extern optionlist optionlist_transports[];
 509 extern int     optionlist_transports_size;
 510
 511 extern uid_t   original_euid;          /* Original effective uid */
 512 extern gid_t   originator_gid;         /* Gid of whoever wrote spool file */
 513 extern uschar *originator_login;       /* Login of same */
 514 extern uschar *originator_name;        /* Full name of same */
 515 extern uid_t   originator_uid;         /* Uid of ditto */
 516 extern uschar *override_local_interfaces; /* Value of -oX argument */
 517 extern uschar *override_pid_file_path; /* Value of -oP argument */
 518
 519 extern BOOL    parse_allow_group;      /* Allow group syntax */
 520 extern BOOL    parse_found_group;      /* In the middle of a group */
 521 extern uschar *percent_hack_domains;   /* Local domains for which '% operates */
 522 extern uschar *pid_file_path;          /* For writing daemon pids */
 523 extern uschar *pipelining_advertise_hosts; /* As it says */
 524 extern BOOL    pipelining_enable;      /* As it says */
 525 extern BOOL    preserve_message_logs;  /* Save msglog files */
 526 extern uschar *primary_hostname;       /* Primary name of this computer */
 527 extern BOOL    print_topbitchars;      /* Topbit chars are printing chars */
 528 extern uschar  process_info[];         /* For SIGUSR1 output */
 529 extern uschar *process_log_path;       /* Alternate path */
 530 extern BOOL    prod_requires_admin;    /* TRUE if prodding requires admin */
 531 extern uschar *prvscheck_address;      /* Set during prvscheck expansion item */
 532 extern uschar *prvscheck_keynum;       /* Set during prvscheck expansion item */
 533 extern uschar *prvscheck_result;       /* Set during prvscheck expansion item */
 534
 535 extern uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
 536 extern uschar *qualify_domain_sender;  /* Domain to qualify senders with */
 537 extern BOOL    queue_2stage;           /* Run queue in 2-stage manner */
 538 extern uschar *queue_domains;          /* Queue these domains */
 539 extern BOOL    queue_list_requires_admin; /* TRUE if -bp requires admin */
 540 extern BOOL    queue_run_first_delivery; /* If TRUE, first deliveries only */
 541 extern BOOL    queue_run_force;        /* TRUE to force during queue run */
 542 extern BOOL    queue_run_local;        /* Local deliveries only in queue run */
 543 extern BOOL    queue_running;          /* TRUE for queue running process and */
 544                                        /*   immediate children */
 545 extern pid_t   queue_run_pid;          /* PID of the queue running process or 0 */
 546 extern int     queue_run_pipe;         /* Pipe for synchronizing */
 547 extern int     queue_interval;         /* Queue running interval */
 548 extern BOOL    queue_only;             /* TRUE to disable immediate delivery */
 549 extern int     queue_only_load;        /* Max load before auto-queue */
 550 extern BOOL    queue_only_load_latch;  /* Latch queue_only_load TRUE */
 551 extern uschar *queue_only_file;        /* Queue if file exists/not-exists */
 552 extern BOOL    queue_only_override;    /* Allow override from command line */
 553 extern BOOL    queue_only_policy;      /* ACL or local_scan wants queue_only */
 554 extern BOOL    queue_run_in_order;     /* As opposed to random */
 555 extern int     queue_run_max;          /* Max queue runners */
 556 extern BOOL    queue_smtp;             /* Disable all immediate STMP (-odqs)*/
 557 extern uschar *queue_smtp_domains;     /* Ditto, for these domains */
 558
 559 extern unsigned int random_seed;       /* Seed for random numbers */
 560 extern tree_node *ratelimiters_cmd;    /* Results of command ratelimit checks */
 561 extern tree_node *ratelimiters_conn;   /* Results of connection ratelimit checks */
 562 extern tree_node *ratelimiters_mail;   /* Results of per-mail ratelimit checks */
 563 extern uschar *raw_active_hostname;    /* Pre-expansion */
 564 extern uschar *raw_sender;             /* Before rewriting */
 565 extern uschar **raw_recipients;        /* Before rewriting */
 566 extern int     raw_recipients_count;
 567 extern int     rcpt_count;             /* Count of RCPT commands in a message */
 568 extern int     rcpt_fail_count;        /* Those that got 5xx */
 569 extern int     rcpt_defer_count;       /* Those that got 4xx */
 570 extern gid_t   real_gid;               /* Real gid */
 571 extern uid_t   real_uid;               /* Real user running program */
 572 extern BOOL    really_exim;            /* FALSE in utilities */
 573 extern BOOL    receive_call_bombout;   /* Flag for crashing log */
 574 extern int     receive_linecount;      /* Mainly for BSMTP errors */
 575 extern int     receive_messagecount;   /* Mainly for BSMTP errors */
 576 extern int     receive_timeout;        /* For non-SMTP acceptance */
 577 extern int     received_count;         /* Count of Received: headers */
 578 extern uschar *received_for;           /* For "for" field */
 579 extern uschar *received_header_text;   /* Definition of Received: header */
 580 extern int     received_headers_max;   /* Max count of Received: headers */
 581 extern int     received_time;          /* Time the message was received */
 582 extern uschar *recipient_data;         /* lookup data for recipients */
 583 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
 584 extern uschar *recipient_verify_failure; /* What went wrong */
 585 extern BOOL    recipients_discarded;   /* By an ACL */
 586 extern int     recipients_list_max;    /* Maximum number fitting in list */
 587 extern int     recipients_max;         /* Max permitted */
 588 extern int     recipients_max_reject;  /* If TRUE, reject whole message */
 589 extern const pcre *regex_AUTH;         /* For recognizing AUTH settings */
 590 extern const pcre  *regex_check_dns_names; /* For DNS name checking */
 591 extern const pcre  *regex_From;        /* For recognizing "From_" lines */
 592 extern const pcre  *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
 593 extern const pcre  *regex_PIPELINING;  /* For recognizing PIPELINING */
 594 extern const pcre  *regex_SIZE;        /* For recognizing SIZE settings */
 595 extern const pcre  *regex_smtp_code;   /* For recognizing SMTP codes */
 596 extern const pcre  *regex_ismsgid;     /* Compiled r.e. for message it */
 597 #ifdef WITH_CONTENT_SCAN
 598 extern uschar *regex_match_string;     /* regex that matched a line (regex ACL condition) */
 599 #endif
 600 extern int     remote_delivery_count;  /* Number of remote addresses */
 601 extern int     remote_max_parallel;    /* Maximum parallel delivery */
 602 extern uschar *remote_sort_domains;    /* Remote domain sorting order */
 603 extern retry_config *retries;          /* Chain of retry config information */
 604 extern int     retry_data_expire;      /* When to expire retry data */
 605 extern int     retry_interval_max;     /* Absolute maximum */
 606 extern int     retry_maximum_timeout;  /* The maximum timeout */
 607 extern uschar *return_path;            /* Return path for a message */
 608 extern BOOL    return_path_remove;     /* Remove return-path headers */
 609 extern int     rewrite_existflags;     /* Indicate which headers have rewrites */
 610 extern uschar *rfc1413_hosts;          /* RFC hosts */
 611 extern int     rfc1413_query_timeout;  /* Timeout on RFC 1413 calls */
 612 /* extern BOOL    rfc821_domains;  */       /* If set, syntax is 821, not 822 => being abolished */
 613 extern uid_t   root_uid;               /* The uid for root */
 614 extern router_info routers_available[];/* Vector of available routers */
 615 extern router_instance *routers;       /* Chain of instantiated routers */
 616 extern router_instance router_defaults;/* Default values */
 617 extern BOOL    running_in_test_harness; /*TRUE when running_status is patched */
 618 extern ip_address_item *running_interfaces; /* Host's running interfaces */
 619 extern uschar *running_status;         /* Flag string for testing */
 620 extern int     runrc;                  /* rc from ${run} */
 621
 622 extern uschar *search_error_message;   /* Details of lookup problem */
 623 extern BOOL    search_find_defer;      /* Set TRUE if lookup deferred */
 624 extern uschar *self_hostname;          /* Self host after routing->directors */
 625 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
 626 extern uschar *sender_address_data;    /* address_data from sender verify */
 627 extern BOOL    sender_address_forced;  /* Set by -f */
 628 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
 629 extern uschar *sender_data;            /* lookup result for senders */
 630 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
 631 extern uschar *sender_fullhost;        /* Sender host name + address */
 632 extern uschar *sender_helo_name;       /* Host name from HELO/EHLO */
 633 extern uschar **sender_host_aliases;   /* Points to list of alias names */
 634 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
 635 extern BOOL    sender_host_notsocket;  /* Set for -bs and -bS */
 636 extern BOOL    sender_host_unknown;    /* TRUE for -bs and -bS except inetd */
 637 extern uschar *sender_ident;           /* Sender identity via RFC 1413 */
 638 extern BOOL    sender_local;           /* TRUE for local senders */
 639 extern BOOL    sender_name_forced;     /* Set by -F */
 640 extern uschar *sender_rate;            /* Sender rate computed by ACL */
 641 extern uschar *sender_rate_limit;      /* Configured rate limit */
 642 extern uschar *sender_rate_period;     /* Configured smoothing period */
 643 extern uschar *sender_rcvhost;         /* Host data for Received: */
 644 extern BOOL    sender_set_untrusted;   /* Sender set by untrusted caller */
 645 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
 646 extern uschar *sender_verify_failure;  /* What went wrong */
 647 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
 648 extern address_item *sender_verified_failed; /* The one that caused denial */
 649 extern uschar *sending_ip_address;     /* Address of outgoing (SMTP) interface */
 650 extern int     sending_port;           /* Port of outgoing interface */
 651 extern volatile BOOL sigalrm_seen;     /* Flag for sigalrm_handler */
 652 extern uschar **sighup_argv;           /* Args for re-execing after SIGHUP */
 653 extern int     smtp_accept_count;      /* Count of connections */
 654 extern BOOL    smtp_accept_keepalive;  /* Set keepalive on incoming */
 655 extern int     smtp_accept_max;        /* Max SMTP connections */
 656 extern int     smtp_accept_max_nonmail;/* Max non-mail commands in one con */
 657 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
 658 extern int     smtp_accept_max_per_connection; /* Max msgs per connection */
 659 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
 660 extern int     smtp_accept_queue;      /* Queue after so many connections */
 661 extern int     smtp_accept_queue_per_connection; /* Queue after so many msgs */
 662 extern int     smtp_accept_reserve;    /* Reserve these SMTP connections */
 663 extern uschar *smtp_active_hostname;   /* Hostname for this message */
 664 extern BOOL    smtp_authenticated;     /* Sending client has authenticated */
 665 extern uschar *smtp_banner;            /* Banner string (to be expanded) */
 666 extern BOOL    smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
 667 extern int     smtp_ch_index;          /* Index in smtp_connection_had */
 668 extern uschar *smtp_cmd_argument;      /* For all SMTP commands */
 669 extern uschar *smtp_cmd_buffer;        /* SMTP command buffer */
 670 extern time_t  smtp_connection_start;  /* Start time of SMTP connection */
 671 extern uschar  smtp_connection_had[];  /* Recent SMTP commands */
 672 extern int     smtp_connect_backlog;   /* Max backlog permitted */
 673 extern double  smtp_delay_mail;        /* Current MAIL delay */
 674 extern double  smtp_delay_rcpt;        /* Current RCPT delay */
 675 extern BOOL    smtp_enforce_sync;      /* Enforce sync rules */
 676 extern uschar *smtp_etrn_command;      /* Command to run */
 677 extern BOOL    smtp_etrn_serialize;    /* Only one at once */
 678 extern FILE   *smtp_in;                /* Incoming SMTP input file */
 679 extern int     smtp_load_reserve;      /* Only from reserved if load > this */
 680 extern int     smtp_mailcmd_count;     /* Count of MAIL commands */
 681 extern int     smtp_max_synprot_errors;/* Max syntax/protocol errors */
 682 extern int     smtp_max_unknown_commands; /* As it says */
 683 extern uschar *smtp_notquit_reason;    /* Global for disconnect reason */
 684 extern FILE   *smtp_out;               /* Incoming SMTP output file */
 685 extern uschar *smtp_ratelimit_hosts;   /* Rate limit these hosts */
 686 extern uschar *smtp_ratelimit_mail;    /* Parameters for MAIL limiting */
 687 extern uschar *smtp_ratelimit_rcpt;    /* Parameters for RCPT limiting */
 688 extern uschar *smtp_read_error;        /* Message for SMTP input error */
 689 extern int     smtp_receive_timeout;   /* Applies to each received line */
 690 extern uschar *smtp_reserve_hosts;     /* Hosts for reserved slots */
 691 extern BOOL    smtp_return_error_details; /* TRUE to return full info */
 692 extern int     smtp_rlm_base;          /* Base interval for MAIL rate limit */
 693 extern double  smtp_rlm_factor;        /* Factor for MAIL rate limit */
 694 extern int     smtp_rlm_limit;         /* Max delay */
 695 extern int     smtp_rlm_threshold;     /* Threshold for RCPT rate limit */
 696 extern int     smtp_rlr_base;          /* Base interval for RCPT rate limit */
 697 extern double  smtp_rlr_factor;        /* Factor for RCPT rate limit */
 698 extern int     smtp_rlr_limit;         /* Max delay */
 699 extern int     smtp_rlr_threshold;     /* Threshold for RCPT rate limit */
 700 extern BOOL    smtp_use_pipelining;    /* Global for passed connections */
 701 extern BOOL    smtp_use_size;          /* Global for passed connections */
 702
 703 #ifdef WITH_CONTENT_SCAN
 704 extern uschar *spamd_address;          /* address for the spamassassin daemon */
 705 extern uschar *spam_bar;               /* the spam "bar" (textual representation of spam_score) */
 706 extern uschar *spam_report;            /* the spamd report (multiline) */
 707 extern uschar *spam_score;             /* the spam score (float) */
 708 extern uschar *spam_score_int;         /* spam_score * 10 (int) */
 709 #endif
 710 #ifdef EXPERIMENTAL_SPF
 711 extern uschar *spf_guess;              /* spf best-guess record */
 712 extern uschar *spf_header_comment;     /* spf header comment */
 713 extern uschar *spf_received;           /* Received-SPF: header */
 714 extern uschar *spf_result;             /* spf result in string form */
 715 extern uschar *spf_smtp_comment;       /* spf comment to include in SMTP reply */
 716 #endif
 717 extern BOOL    split_spool_directory;  /* TRUE to use multiple subdirs */
 718 extern uschar *spool_directory;        /* Name of spool directory */
 719 #ifdef EXPERIMENTAL_SRS
 720 extern uschar *srs_config;             /* SRS config secret:max age:hash length:use timestamp:use hash */
 721 extern uschar *srs_db_address;         /* SRS db address */
 722 extern uschar *srs_db_key;             /* SRS db key */
 723 extern int     srs_hashlength;         /* SRS hash length */
 724 extern int     srs_hashmin;            /* SRS minimum hash length */
 725 extern int     srs_maxage;             /* SRS max age */
 726 extern uschar *srs_orig_sender;        /* SRS original sender */
 727 extern uschar *srs_orig_recipient;     /* SRS original recipient */
 728 extern uschar *srs_recipient;          /* SRS recipient */
 729 extern uschar *srs_secrets;            /* SRS secrets list */
 730 extern uschar *srs_status;             /* SRS staus */
 731 extern BOOL    srs_usehash;            /* SRS use hash flag */
 732 extern BOOL    srs_usetimestamp;       /* SRS use timestamp flag */
 733 #endif
 734 extern BOOL    strict_acl_vars;        /* ACL variables have to be set before being used */
 735 extern int     string_datestamp_offset;/* After insertion by string_format */
 736 extern BOOL    strip_excess_angle_brackets; /* Surrounding route-addrs */
 737 extern BOOL    strip_trailing_dot;     /* Remove dots at ends of domains */
 738 extern uschar *submission_domain;      /* Domain for submission mode */
 739 extern BOOL    submission_mode;        /* Can be forced from ACL */
 740 extern uschar *submission_name;        /* User name set from ACL */
 741 extern BOOL    suppress_local_fixups;  /* Can be forced from ACL */
 742 extern BOOL    synchronous_delivery;   /* TRUE if -odi is set */
 743 extern BOOL    syslog_duplication;     /* FALSE => no duplicate logging */
 744 extern int     syslog_facility;        /* As defined by Syslog.h */
 745 extern uschar *syslog_processname;     /* 'ident' param to openlog() */
 746 extern BOOL    syslog_timestamp;       /* TRUE if time on syslogs */
 747 extern uschar *system_filter;          /* Name of system filter file */
 748
 749 extern uschar *system_filter_directory_transport;  /* Transports for the */
 750 extern uschar *system_filter_file_transport;       /* system filter */
 751 extern uschar *system_filter_pipe_transport;
 752 extern uschar *system_filter_reply_transport;
 753
 754 extern gid_t   system_filter_gid;      /* Gid for running system filter */
 755 extern BOOL    system_filter_gid_set;  /* TRUE if gid set */
 756 extern uid_t   system_filter_uid;      /* Uid for running system filter */
 757 extern BOOL    system_filter_uid_set;  /* TRUE if uid set */
 758 extern BOOL    system_filtering;       /* TRUE when running system filter */
 759
 760 extern BOOL    tcp_nodelay;            /* Controls TCP_NODELAY on daemon */
 761 #ifdef USE_TCP_WRAPPERS
 762 extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
 763 #endif
 764 extern int     test_harness_load_avg;  /* For use when testing */
 765 extern int     thismessage_size_limit; /* Limit for this message */
 766 extern int     timeout_frozen_after;   /* Max time to keep frozen messages */
 767 extern BOOL    timestamps_utc;         /* Use UTC for all times */
 768 extern int     transport_count;        /* Count of bytes transported */
 769 extern uschar **transport_filter_argv; /* For on-the-fly filtering */
 770 extern int     transport_filter_timeout; /* Timeout for same */
 771 extern BOOL    transport_filter_timed_out; /* True if it did */
 772
 773 extern transport_info transports_available[]; /* Vector of available transports */
 774 extern transport_instance *transports; /* Chain of instantiated transports */
 775 extern transport_instance transport_defaults; /* Default values */
 776
 777 extern int     transport_write_timeout;/* Set to time out individual writes */
 778
 779 extern tree_node *tree_dns_fails;      /* Tree of DNS lookup failures */
 780 extern tree_node *tree_duplicates;     /* Tree of duplicate addresses */
 781 extern tree_node *tree_nonrecipients;  /* Tree of nonrecipient addresses */
 782 extern tree_node *tree_unusable;       /* Tree of unusable addresses */
 783
 784 extern BOOL    trusted_caller;         /* Caller is trusted */
 785 extern gid_t  *trusted_groups;         /* List of trusted groups */
 786 extern uid_t  *trusted_users;          /* List of trusted users */
 787 extern uschar *timezone_string;        /* Required timezone setting */
 788
 789 extern uschar *unknown_login;          /* To use when login id unknown */
 790 extern uschar *unknown_username;       /* Ditto */
 791 extern uschar *untrusted_set_sender;   /* Let untrusted users set these senders */
 792 extern uschar *uucp_from_pattern;      /* For recognizing "From " lines */
 793 extern uschar *uucp_from_sender;       /* For building the sender */
 794
 795 extern uschar *warn_message_file;      /* Template for warning messages */
 796 extern uschar *warnmsg_delay;          /* String form of delay time */
 797 extern uschar *warnmsg_recipients;     /* Recipients of warning message */
 798 extern BOOL    write_rejectlog;        /* Control of reject logging */
 799
 800 extern uschar *version_copyright;      /* Copyright notice */
 801 extern uschar *version_date;           /* Date of compilation */
 802 extern uschar *version_cnumber;        /* Compile number */
 803 extern uschar *version_string;         /* Version string */
 804
 805 extern int     warning_count;          /* Delay warnings sent for this msg */
 806
 807 /* End of globals.h */